Breaking: In response to requests from AG and members of Congress, DOJ IG Horowitz says he will investigate the FBI's request for FISA warrant on "a U.S. person"-- a reference to Carter Page. Probe will include role of "confidential FBI source"-a reference to Christoper Steele.

Breaking: In response to requests from AG and members of Congress, DOJ IG Horowitz says he will investigate the FBI's request for FISA warrant on "a U.S. person"-- a reference to Carter Page. Probe will include role of "confidential FBI source"-a reference to Christoper Steele.

— Michael Isikoff (@Isikoff) March 28, 2018